tests: add extension to emulate invoking internalpatch at the specific time This extension fakes "mtime" of patched files to emulate invoking 'patch.internalpatch()' at the specific time. This is useful to reproduce timing critical issues fixed in subsequent patches.

cmdutil: remove useless dirstate.normallookup() invocation in revert() Explicit 'dirstate.normallookup()' invocation in 'revert()' is useless now, because previous patch fixed the relevant issue by writing in-memory dirstate changes out at the end of dirty check. 'dirstate.normallookup()' invocation was introduced by 21b33f0460e0 to avoid occasional test failure (see issue4583 for detail). This is partial backout of it (added tests are still left).